Wireless networking..but what about power?

For the past few years, wireless networking came with the promise of being untethered by wires. You could sit in a cafe and work on your LAN. Wireless sensor motes could be scattered in a forest or on the ocean, and would faithfully transmit data. Intel even ran some ads a few years back, where a user would be working on a Centrino-equipped laptop in the middle of a nice, green lawn.

And I would always think, what happens when these gadgets run out of power? What we really need is to be able to transmit power wirelessly.

Voila!